The Actually Fact is that there are only 2 dog breeds identifies as Mexican dog breeds by International canine Organisation. Other Dog breed's origins are not certain. It is believed that many ancient Dog breeds of Mexico have been extincted. Which remains us with just 2 Dog breeds to discuss. The Famous Mexican Dog is hairless Mexican Xoloitzcuintli and chihuahua. Which are interesting and amazing Dogs Xoloitzcuintli know For their Ancient History and chihuahua know for their Size in Guinness World Record. Xoloitzcuintli is a weird Dog, Because of its History. But Cute the way it looks. In the Old Mexican, History Xoloitzcuintli is considered a scared Dog, It is believed that its spirit is used to make contact with the underworld.they were referred to as God Dogs.